Do you mean where to save digger.ini?
Yes, in fact there are two files that get generated Digger.ini and Digger.sco (scored), but both get generated according to the "working directory".
I'm still confused with
FHS on which should does files be located.
"/var/lib - State information. Persistent data modified by programs as they run, e.g., databases, packaging system metadata, etc."
"/home - Users' home directories, containing saved files, personal settings, etc."
"/etc - >Host-specific system-wide configuration files
There has been controversy over the meaning of the name itself. In early versions of the UNIX Implementation Document from Bell labs, /etc is referred to as the etcetera directory,[3] as this directory historically held everything that did not belong elsewhere (however, the FHS restricts /etc to static configuration files and may not contain binaries).[4] Since the publication of early documentation, the directory name has been re-explained in various ways. Recent interpretations include backronyms such as "Editable Text Configuration" or "Extended Tool Chest".[5]"
Regards